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.Management Sciences
Category: Everyday Science Mcqs
In a railway track, two rails are joined end to end with a gap tin between them because?
A. Steel can be saved
B. Accidents due to contraction in winter can be avoided
C. Air gaps are necessary for bearing the weight of running train
D. Accidents due to expansion in summer can be avoided
E. All of these
Reflex actions in head region are under the control of___________?
A. Brain
B. Spinal cord
C. both a & b
D. non of the above
Water is a highly effective coolant for a car engine because _________?
A. Water is good conductor of heat
B. Water has very high specific heat capacity
C. Water boils at a comparatively high temperature
D. Evaporation of water produces lot of cooling
For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will _________?
A. also decrease
B. increase
C. remains constant
D. none of these
The lenses are used for the correction of:____________?
A. Long-sightedness
B. short sightedness
C. Both A & B
D. None of those
The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect
A. Nitrogen Dioxide (NO2)
B. Chlorofluorocarbons (CFCs)
C. Methane (CH4)
D. High-fructose corn syrup (HFCs)
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